Some of these ideas are as old as time but the comic seriousness is great. Reminds me of older analog delay circuits where the signal was sent as a sound wave

Some of these ideas are as old as time but the comic seriousness is great. Reminds me of older analog delay circuits where the signal was sent as a sound wave in glass IIRC ... with multiple taps for different delays. EDIT: Here's a cool example that maybe warrants its own submission: https://www.eevblog.com/forum/projects/glass-ultrasonic-delay-lines-pictures/ https://www.eevblog.com/forum/projects/glass-ultrasonic-dela...